| 摘要 |
PURPOSE:To facilitate the manufacture thereof and improve a heat exchanging efficiency by a method wherein the heat exchanger is constituted with an air path forming frame section integrally formed with two air paths alternately and a cover section having vent holes. CONSTITUTION:In the air path forming frame section 1, a multitude of heat exchanging walls 4 are projected radially from the outer periphery of a cylindrical frame section 3 and closing walls 7, 8 are provided at both ends of the heat exchang ing walls alternately to form the air paths 5, 6. The flexible cover section 2 has vent holes 9, 10 corresponding to the closing walls 7, 8 respectively and is wound around and adhered to the outer periphery of the air path forming frame section 1. Thus the air paths 5, 6, having the vent holes 9, 10 as inflow ports and openings at the end surfaces between respective closing walls 7, 8 as outflow ports, may be formed. |
